31031203013131 has 8 divisors (see below), whose sum is σ = 31081013187840. Its totient is φ = 30981423373992.

The previous prime is 31031203013101. The next prime is 31031203013149. The reversal of 31031203013131 is 13131030213013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31031203013131 - 2⁵ = 31031203013099 is a prime.

It is a super-2 number, since 2×31031203013131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31031203013101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5599365 + ... + 9665158.

It is an arithmetic number, because the mean of its divisors is an integer number (3885126648480).

Almost surely, 2^{31031203013131} is an apocalyptic number.

31031203013131 is a deficient number, since it is larger than the sum of its proper divisors (49810174709).

31031203013131 is a wasteful number, since it uses less digits than its factorization.

31031203013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15267785.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31031203013131 its reverse (13131030213013), we get a palindrome (44162233226144).

The spelling of 31031203013131 in words is "thirty-one trillion, thirty-one billion, two hundred three million, thirteen thousand, one hundred thirty-one".